Lock alarm



. LOCK ALARM A l Filed Oct. 4, 1955 2 Sheets-Sheet 1 lNvEN-roR v www,

v /7/'5 ATTORNEY.

Nov.y 26, 1935.

G. FARVKAS LOCK ALARM Filed ociv 4, 1955 2 Sheets-Sheet 2` Patented Nov.26, 1935 UNITED `STATES PATENT OFFICE LOCK ALARM Gedeon Farkas,Elizabeth, N. J.

Application October 4, 1933, Serial No. 692,120

' 10 claims. (o1. 116-33) This invention relates to a lock-alarm de-Vvice comprising interrelated devices or mechanisms for providing a lockcontrolling the action of electro-dynamic parts and means for con--trolling mechanically actuated alarm parts by or swinging panels orclosures of different types or characters.

More particularly, my invention relates to mechanisms, intercontrolledthrough asingle mechanical element, extending operatively into both wmechanisms to cooperate with parts of the respective keys employed i. e.a key to control an ignition system and a key for setting a mechanicalalarm system.

A further inventive feature is the provision of a pivoted bar, which hasa small end conned in an arcuate groove of an ignition lock controlbarrel and an opposite longer end formed with a fork or yoke and anextending finger, said fork straddling an oscillatory shaft of an alarmescapement, said shaft having a web or feather, against the sides ofwhich, the sides of the fork or yoke are alternately or intermittentlymoved to hold the escapement shaft against releasing a clock-train ofgearing which is continuously under spring urge in the usual manner.

By employing an alarm or secondary key which contacts with the saidfinger beyond said fork, the pivoted bar or lever may be set at variouspositions, one position being a dead or still position when running theautomobile or at other desired periods such as when in storage; in thisposition the pivoted bar is moved so that the small end thereof isrocked out of the arcuate groove entirely and free of the key barrel,but one side of the yoke is still in contact with the feather on thealarm escapement shaft. In this position of the bar, the alarm cannot beoperated in any manner, except by using the secondary key to engage thesaid linger to throw it to the alarm-set position. A

The pivot pin of the said bar exerts sufficient friction to hold itwhere pu against the spring urge of the clock-train.

In the embodiment of the invention here shown in the drawings:

Fig. 1 is a front elevation, indicating, in dotted lines, theclock-train and its associated escapement and alarm hammer, togetherwith the interoperative pivoted oscillatory `bar extendingl into theopposite mechanisms.

Fig. 2 is a back or rear View of the device as attached to anautomobile, said device being turned vertically, or upside down; theparts being in the alarm set position with the small end of the barextending across a portion of the ignition- 5 lock key slot.

Fig. 3 is a partial vertical section taken about on the line 3-3 of Fig.5, looking backwardly, as the arrows point, with the ignition parts inthe locked position and the alarm set against tampering with theignition lock and with the alarm set key in the position it occupiesprior to moving the rock bar to the dead position.

Fig. 4 is a fragmentary detail view showing the ignition lock-controlkey in the act of turn- 15 ing its barrel to cause a projecting pinthereon to engage a projection on the ignition lock bar for sliding thebar out of engagement with an ignition control part for unlocking saidignition, prior tostarting the automobile. 20

Fig. 5 is a top plan, or top edge View of the lock-alarm device,indicating in dotted lines, principal parts of the invention, to betterdisclose the interconnection of the rock bar or alarm control member. y25 Figs. 6, 7, 8 and 9, are detail views of the several keys employed inconnection with the invention.

Fig. 10 is a diagram showing the position of a lock bar when the alarm1s free to sound. 30

A detailed description of the construction of the lock-alarm as shown inthe present embodiment may be set forth as follows:-

n A base plate I, has attached thereto in any desired manner casings orhousings 2 and 3, 35 Which project backwardly from the front face ofsaid plate I, as best shown in Fig. 5, on the drawings. The casings areclosed at the front as in Fig. 1 permanently and open at the back asshown in Fig. 2; the open ends being closed by suitable 40 cap plates 4and 5. (See Fig. 5.)

Within the casing 2, is located a portion 6 of the ignition system of anautomobile, and within the casing 3, is located a clock-train alarmsystem 'I o f any well known type, having an escape- 45 ment shaft 8,provided with an outstanding Wing or feather 9, said shaft being springurged at all times in the usual manner. This shaft 8 also carries ahammer IU, for intermittent contact with a bell II,` when an alarm isinitiated, as 50 itis well known in thisart.

Ar key barrel I2, preferably of the Yale type extends through thefrontwall of the casing 2, and is revolubly mounted in its tumbler cageI3; the barrel is formed with an arcuate slot or recess I4 which crossesor intersects the key-slot I5, said key slot having the usual curvedcrosssection at most of its length (Figs. 3 and 4) but a wider straightopening portion at its outer end (Figs, 1 and 5) to permit the insertionof its matching key thereinto but still conceal the actual curvaturethereof from ready inspection from the outside.

The key barrel I2, also carries a projecting pin It, located close tothe rear edge of the tumbler cage I3, and when locking the ignitionsystem, a key Il of the Yale type may be employed to turn the barrel I2in one direction causing said'.

pin l5, to engage a lug or extension I8, on a slide bar I9, operating ina guide-groove 20, for mov'- ing said slide bar into locking positionbehind a shoulder 2! of the ignition parts to prevent the same frombeing turned into operative igniting position by a hand-lever 22,(Fig. 1) on an ignition `shaft 23; and by a reverse turning movement ofthe lock-barrel I2, the pin I6 will be carried around to engage theopposite side of the lug I8 to move the slide-bar I9, out of engagementwith the shoulder 2lof the ignition system to release the same so thatthe automobile may be operated, all this also being well known in thevart.

At the front of the ignition casing 2, is another hand lever 24, forcontrolling the lights of the automobile through a shaft 25, but theseparts form no part of this invention and will not be further described.

A key 28, (Fig. 9) is employed for winding a spring 2l (Fig. l) of thealarm train 1, in the usual manner, and a third or set key 28, having aweb or wing 29, is employed to set a rock-bar or pivotedlever 38 forcontrolling the action of the alarm apparatus, as hereinafter described.

The rock-bar 38 is pivoted on a screw or pin 3 I,

which sets up sufficient friction in the joint to hold or maintain therock-bar where set, in the several adjustments, under normal conditions.The rock-bar 38 is formed into the curve shown; the shorter end- 32-being reducedVV in width to form a safety gate across the key slot ofthe ignition lock and rest in` the arcuate groove I4 of the barrel I2 ofsaid lock andI this position is maintained when the automobile isunattended. This gate portionacts against theft throughthe 'rock-bar tosound an alarm should a key or other instrument be inserted in the keyslot I5 of the lock barrel I2, for such key or instrument would raisethis gate slightly thereby partially rocking said bar on its pivot andrelease the alarm, as will be described presently;

At the extremity of the longer end 33 of the rock-bar 39, is formed afork or yoke 34, one prong 01 side 35 of the fork being comparativelyshort, while the other or opposite prong 36, is outcurvedl to clear theescapement shaft 8, as at 3l, and terminates in a trip finger orextension 38, which is engaged by the web portion 29 of the set-key 28,in the operation of setting the position of the bar or lever 39.

As indicated in Fig. 5 of the drawings, a circular block 39 having acentral bore 48, is fixed to the bottom or outer wallv 4I, of the alarmcasing 3. The block has a reduced tubular portion t2, which extendsforwardly through said wall 4Il and base plate I, as at 43, and locatedwithin the central bore 48 ofthe block, is a rotary key barrel144,itself provided with a central bore 45, (Figs. 1 toY 5) anddiametrically opposite side slots 46' which register with properlylocated notches 46a and' 4Gb in the reduced tubular portion 42 in theuse of the key 28 for the passage of the web 29 thereof, said bore andslots being adapted to receive a tubular body 4l, and opposite wings 48,of the key 28 for setting the lever 30. A fixed pin 49 projects throughthe central 5 bore 45 and over which the tubular body 4'I of the key 28rotates, to center said key-body in said bore 45, when operated. The webportion 29 of the key 28 is the only portion thereof which performs anyimportant function, the wings 48 10 merely acting. to turn the barrel 44to properly position the slots 46. v

A portion of the block 39 and of the key barrel are cut away, as at 5Iand 52, respectively, to formy a cavity or space for the web 29 of key28 15 to. operate and further to receive the finger 38 of the rock bar.

The gate portion of the small end 32 of the rock-bar 38 is lowered bythe beveled surface 59 at the forward end of the ignition key I'I 20(Fig. 7) as said key enters the slot I5.

The operation of my device may be described as follows:

As above stated, the alarm can operate only when the rock-bar is rockeda part of its f-ull 25' movement up or down and in this partialVmovement the yoke 34 will straddle the feather 9'4 with both arms 35Iand 38 out of contact therewith thus permitting said feather and itssupporting esoapernent shaft to vibrate and through the 30n hammer I8 tosound an alarm (Fig. 10'). When, however, the lever is moved' to thelimit of its throw, to one side or the other, either one of said forkprongs 35 or 35 will be in locking contact with said feather 94 toy holdthe escape- 35 ment against action.

In the views of Figs. 1 to 3, the ignition is shown as locked againstoperation as when the car is standing in a street unguarded. When it isdesired to start the car, the owner thrusts 40V the alarm setting key 28into the slots 45, and 4Gb (Figs. 1, 2, Band 8), after rst bringing oneof the'slots45 into registering relation with slot 46h, and, with wing29 engaging the under side of lock bar finger 38;, the owner thenexecutes 45 about a quarterturn with said key in anv upward direction,(Fig. 3i). This will cause the forked end of bar 30 to move upwardly,the other end 32 moving downwardly out of the recess i4 of key barrel I2 and the ignition key I5 may now 50H enter its slot and rotate barreli2 without disturbing said bar 3U (Fig. 4). At the same time key 28 willcause the fork branch 35 to engage the feather 9' on escapement shaft 8and lock the alarm against operation. Key 28 will also be 55 given areverse one quarter turn to return to slot 46h and there to be removedfrom its barrel 44.

Wheny the owner again wants to leave the car unguarded and set thealarminto operative po- A sition against unauthorized tampering therewith,slot 45 will be brought into juxtaposition with slot 460iV (Fig. 1) andvkey 28 entered in that position above the linger 38 and given about aquarter turn downwardly with its wing 29, as indicated, in Fig. 2 and,by dotted lines, in Fig. 3, and the lock bar 38 will be returnedv intothe position shown in Figs. l to 3, and any instrument inserted into thekey slot I5 o-f the ignition to an operative depth will rock said bar 38into a 701 middle position, as described hereinbefore and illustrated inthe diagram of Fig. 10, and the alarm willi constantly operate, therebyinforming the people that the car is a stolen one. After this secondstyle of setting: also, the key 28 must be 755 given a reverse quarterturn to return to the slot 46a. and there to be removed from the alarmsetting mechanism. v

Key 26 serves to Wind up the alarm spring, as usual.

It is thought the operation and utility of the lock-alarm device Will beapparent Without further description, and While in the drawings there isillustrated a preferred embodiment of the invention it is to beunderstood that the structural elements thereof are susceptible to suchvariations and modications as fall Within the scope of the broaderclaims.

1. A lock-alarm device comprising in combination; means controlled by aremovable key for locking and releasing parts of the ignition system ofan internal combustion engine; key controlled means forsetting an alarm,and means located in operative connection with each of the said keycontrolled means adapted tobe set for releasing said alarm control meansto sound an alarm When the ignition control lock is entered by a key.

2. A lock-alarm for automobiles, having an ignition lock With arevoluble barrel, an outstanding pin on said barrel, a lock bar mountedto slide at one side of said barrel; said lock bar having a projectionagainst which the pin of said barrel operates to slide the lock bar intoand out of locking position with a part of the ignition system of saidautomobile; an alarm device; said barrel having an arcuate groove, andnormally inoperative means mounted to extend into said arcuate groove ofthe said lock barrel and into said alarm device respectively, andadapted to release said alarm device When the ignition lock is enteredby a key.

3. A lock-alarm comprising a lock for the ignition system of anautomobile; an alarm mechanism having an oscillatory shaft; and aswingable bar, an end thereof having operable connection with a part ofsaid lock, the opposite end of said bar having a fork for operativeaction with a part of said oscillatory shaft of the alarm mechanism forcontrolling the same.

4. A lock-alarm for automobiles embodying a pair of casings; a baseplate for supporting both casings in side-by-side relation; a keyoperated lock for controlling the action of an ignition apparatuslocated Within one casing; a key controlled alarm apparatus in the othercasing; and a normally inoperative rock-bar extending through the Wallsof said oasings from one apparatus to the other, adapted to be set torelease the alarm apparatus when the ignition control lock is enteredwitha key.

5. A lock-alarm for automobiles, comprising,

a device for locking the ignition system; alarm means; a pivoted elementhaving a reduced curved end and an enlarged forked end terminating in aprojecting nger, the reduced end in one position, mounted to extendacross the 5 key slot in said ignition lock, the forked end straddlingan oscillatory part of the alarm means and controlled by a key operatingagainst said nger for the purpose set forth.

6. A lock-alarm for automobiles, comprising a 10 face plate; ignitionand alarm apparatus, carried by and separately placed on said faceplate; key controlled means for locking the ignition apparatus; arock-bar frictionally pivoted near the ignition locking means and awayfrom its longitudinal 15 center to provide a short and a longer end; anescapement shaft in the alarm apparatus; a Wing on said shaft; saidrock-bar operatively engaging at one end the ignition lock and at theother end the said wing of alarm apparatus, and key means op- 20 erablein the alarm apparatus for setting the rockbar in several positions asdesired.

7. A lock-'alarm for automobiles, comprising a lock embodying a xedtumbler cage and a barrel revoluble therein, said barrel being formedwith an 25 arcuate slot extending partially around it; a projecting pinon said barrel; a slide bar having a projection in thepath of saidprojecting pin when the lock barrel is rotated to urge said slide barinto locking contact with a part of the ignition 30 system of anautomobile; an alarm device; and normally inoperative means adapted tobe set to extend into said slot for causing the alarm device to beinitiated when said means is disturbed by a key entering said lock. 35

8. The combination with a lock and devices for controlling the ignitionsystem of automobiles; of a mechanical alarm mechanism; and a keycontrolled rock bar extending from a frictional pivoting center in onedirection into operative rela- 40 tion With said ignition lock, and inthe opposite direction into controlling relation with said mechanicalalarm mechanism, for the purpose set forth.

9. A lock-alarm for automobiles comprising a 45 lock for the ignitionsystem; an alarm device; a connection between the ignition lock andthealarm device and key operated means for adjusting said connection, forinitiating an alarm when the ignition lock is entered by a key. 50

10. A lock-alarm device, comprising an ignition lock having a key slot;an alarm mechanism; a vibratory element therein; and a rockable member,one end thereof forming a locking gate disposable across said key slotand the other end 55 normally in locking contact with saidvvibratoryelement.

GEDEON FAR/KAS.

